18720828

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{24763}}^1$

素因数の和:24783

約数の個数: 48

約数和(自身を含む): 55471360

約数和(自身を除く): 36750532

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 24763, 49526, 74289, 99052, 148578, 173341, 222867, 297156, 346682, 445734, 520023, 668601, 693364, 891468, 1040046, 1337202, 1560069, 2080092, 2674404, 3120138, 4680207, 6240276, 9360414, 18720828]

約数ペア:

[(1, 18720828), (2, 9360414), (3, 6240276), (4, 4680207), (6, 3120138), (7, 2674404), (9, 2080092), (12, 1560069), (14, 1337202), (18, 1040046), (21, 891468), (27, 693364), (28, 668601), (36, 520023), (42, 445734), (54, 346682), (63, 297156), (84, 222867), (108, 173341), (126, 148578), (189, 99052), (252, 74289), (378, 49526), (756, 24763)]